/*
    Font draw speed and flicker test, draws all numbers 0-999 in each font
    Average time in milliseconds to draw each character is shown in red

    A total of 2890 characters are drawn in each font then the time per
    character printed on screen

    #########################################################################
    ###### DON'T FORGET TO UPDATE THE User_Setup.h FILE IN THE LIBRARY ######
    #########################################################################
*/

#include <SPI.h>

#include <TFT_eSPI.h> // Hardware-specific library

TFT_eSPI tft = TFT_eSPI();       // Invoke custom library

unsigned long drawTime = 0;

void setup(void) {
    tft.begin();
    tft.setRotation(1);
}

void loop() {
    int xpos;

    //Measure time to clear screen
    //drawTime = millis();
    tft.fillScreen(TFT_BLACK);
    //drawTime = millis() - drawTime;
    tft.setTextColor(TFT_WHITE, TFT_BLACK);
    //tft.drawNumber(drawTime, 10, 100, 4);
    //delay(1000);

    drawTime = millis();

    // Print all numbers from 0 to 999 in font 1 and calculate character draw time
    for (int i = 0; i < 1000; i++) {
        yield(); tft.drawNumber(i, 100, 80, 1);
    }

    drawTime = millis() - drawTime;

    tft.setTextColor(TFT_RED, TFT_BLACK);
    xpos = 50;
    xpos += tft.drawFloat(drawTime / 2890.0, 3, xpos, 180, 4);
    tft.drawString("ms per character", xpos, 180, 4);
    if (drawTime < 100) {
        tft.drawString("Font 1 not loaded!", 50, 210, 4);
    }

    delay(4000);
    tft.fillScreen(TFT_BLACK);
    tft.setTextColor(TFT_WHITE, TFT_BLACK);
    drawTime = millis();

    // Print all numbers from 0 to 999 in font 2 and calculate character draw time
    for (int i = 0; i < 1000; i++) {
        yield(); tft.drawNumber(i, 100, 80, 2);
    }

    drawTime = millis() - drawTime;

    tft.setTextColor(TFT_RED, TFT_BLACK);
    xpos = 50;
    xpos += tft.drawFloat(drawTime / 2890.0, 3, xpos, 180, 4);
    tft.drawString("ms per character", xpos, 180, 4);
    if (drawTime < 200) {
        tft.drawString("Font 2 not loaded!", 50, 210, 4);
    }

    delay(4000);
    tft.fillScreen(TFT_BLACK);
    tft.setTextColor(TFT_WHITE, TFT_BLACK);
    drawTime = millis();

    // Print all numbers from 0 to 999 in font 4 and calculate character draw time
    for (int i = 0; i < 1000; i++) {
        yield(); tft.drawNumber(i, 100, 80, 4);
    }

    drawTime = millis() - drawTime;

    tft.setTextColor(TFT_RED, TFT_BLACK);
    xpos = 50;
    xpos += tft.drawFloat(drawTime / 2890.0, 3, xpos, 180, 4);
    tft.drawString("ms per character", xpos, 180, 4);
    if (drawTime < 200) {
        tft.drawString("Font 4 not loaded!", 50, 210, 4);
    }

    delay(4000);
    tft.fillScreen(TFT_BLACK);
    tft.setTextColor(TFT_WHITE, TFT_BLACK);
    drawTime = millis();

    // Print all numbers from 0 to 999 in font 6 and calculate character draw time
    for (int i = 0; i < 1000; i++) {
        yield(); tft.drawNumber(i, 100, 80, 6);
    }

    drawTime = millis() - drawTime;

    tft.setTextColor(TFT_RED, TFT_BLACK);
    xpos = 50;
    xpos += tft.drawFloat(drawTime / 2890.0, 3, xpos, 180, 4);
    tft.drawString("ms per character", xpos, 180, 4);
    if (drawTime < 200) {
        tft.drawString("Font 6 not loaded!", 50, 210, 4);
    }

    delay(4000);
    tft.fillScreen(TFT_BLACK);
    tft.setTextColor(TFT_WHITE, TFT_BLACK);
    drawTime = millis();

    // Print all numbers from 0 to 999 in font 7 and calculate character draw time
    for (int i = 0; i < 1000; i++) {
        yield(); tft.drawNumber(i, 100, 80, 7);
    }

    drawTime = millis() - drawTime;

    tft.setTextColor(TFT_RED, TFT_BLACK);
    xpos = 50;
    xpos += tft.drawFloat(drawTime / 2890.0, 3, xpos, 180, 4);
    tft.drawString("ms per character", xpos, 180, 4);
    if (drawTime < 200) {
        tft.drawString("Font 7 not loaded!", 50, 210, 4);
    }

    delay(4000);
    tft.fillScreen(TFT_BLACK);
    tft.setTextColor(TFT_WHITE, TFT_BLACK);
    drawTime = millis();

    // Print all numbers from 0 to 999 in font 8 and calculate character draw time
    for (int i = 0; i < 1000; i++) {
        yield(); tft.drawNumber(i, 100, 80, 8);
    }

    drawTime = millis() - drawTime;

    tft.setTextColor(TFT_RED, TFT_BLACK);
    xpos = 50;
    xpos += tft.drawFloat(drawTime / 2890.0, 3, xpos, 180, 4);
    tft.drawString("ms per character", xpos, 180, 4);
    if (drawTime < 200) {
        tft.drawString("Font 8 not loaded!", 50, 210, 4);
    }

    delay(4000);
}








